make grid shuffle, grid sizy, gem color types

.gitignore

@@ -6,3 +6,6 @@
 *.uid
 *.tmp
 *.import~
+
+# hidden files
+.*

docs/CLAUDE.md

@@ -4,38 +4,9 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 ## Project Overview
 
-"Skelly" is a Godot 4.4 mobile game project that features a match-3 puzzle game within a broader game framework. The project includes a menu system, settings management, audio handling, and localization support.
+"Skelly" is a Godot 4.4 mobile game project featuring a match-3 puzzle game within a broader game framework. The project includes a menu system, settings management, audio handling, localization support, and a comprehensive debug system.
 
-## Project Structure
-
-### Core Architecture
-- **Autoloaded Singletons**: The project uses four global singletons (autoloads) defined in `project.godot`:
-  - `SettingsManager` - Handles game settings and configuration
-  - `AudioManager` - Manages music and sound effects with volume controls
-  - `GameManager` - Handles scene transitions and game state
-  - `LocalizationManager` - Manages multi-language support (English/Russian)
-
-### Directory Structure
-- `scripts/` - Global singleton scripts and utility classes
-- `scenes/` - Game scenes including main game and match-3 components
-  - `match3/` - Specialized match-3 game implementation
-- `ui/` - User interface scenes (MainMenu, SettingsMenu, PressAnyKeyScreen)
-- `audio/` - Music and sound effect files
-- `resources/` - Game assets (textures, sprites, animations)
-- `localization/` - Translation files for internationalization
-
-### Scene Management Flow
-1. Main entry point: `scenes/main.tscn` with press-any-key screen
-2. Menu navigation: MainMenu → SettingsMenu (with back navigation)
-3. Game flow: MainMenu → Game scene → Match3 game integration
-4. All scene transitions handled through `GameManager` singleton
-
-### Match-3 Game System
-- Located in `scenes/match3/`
-- Grid-based (8x8) tile matching system
-- Implements match detection, tile dropping, and grid refilling
-- Uses tile instances with position-based grid management
-- Automatic cascade matching after tile drops
+**For detailed project architecture, see `docs/MAP.md`**
 
 ## Development Commands
 
@@ -43,44 +14,69 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 - Open project in Godot Editor: Import `project.godot`
 - Run project: Press F5 in Godot Editor or use "Play" button
 - Debug: Use Godot's built-in debugger and remote inspector
+- Debug UI: Press F12 in-game or use debug button to toggle debug panels
+
+### Testing & Development
+- Debug mode can be toggled with F12 key or debug button UI
+- Match-3 debug controls include gem count adjustment and board reroll
+- Difficulty presets: Easy (3 gems), Normal (5 gems), Hard (8 gems)
 
 ### Audio Configuration
-- Music: Located in `audio/` directory with loop configuration in AudioManager
+- Music: Located in `assets/audio/music/` directory with loop configuration in AudioManager
 - Sound effects: UI clicks and game audio managed through audio bus system
-- Audio buses: "Music" and "SFX" buses configured in `default_bus_layout.tres`
+- Audio buses: "Music" and "SFX" buses configured in `data/default_bus_layout.tres`
 
 ### Localization
 - Translations stored in `localization/` as `.translation` files
 - Currently supports English and Russian
 - New translations: Add to `project.godot` internationalization section
 
-## Key Components
+## Key Development Guidelines
 
-### AudioManager (`scripts/AudioManager.gd`)
-- Handles background music with looping
-- Manages UI sound effects (click sounds)
-- Volume control integration with SettingsManager
-- Automatic audio bus configuration
+### Scene Management
+- **ALWAYS** use `GameManager` for scene transitions - never call `get_tree().change_scene_to_file()` directly
+- Scene paths are defined as constants in GameManager
+- Error handling is built into GameManager for failed scene loads
 
-### Match3 Game (`scenes/match3/match3.gd`)
-- 8x8 grid system with 5 tile types
-- Match detection in horizontal and vertical directions
-- Tile dropping physics with position-based movement
-- Recursive match clearing and grid refilling
+### Autoload Usage
+- Use autoloads for global state management only
+- Prefer signals over direct access for loose coupling
+- Don't access autoloads from deeply nested components
 
-### Scene Navigation
-- All scene changes go through GameManager for consistency
-- Scene paths defined as constants in GameManager
-- Error handling for failed scene loads
+### Debug System Integration
+- Connect to `DebugManager.debug_ui_toggled` signal for debug UI visibility
+- Use F12 key for global debug toggle
+- Remove debug prints before committing unless permanently useful
 
-## Input System
-- Custom input actions defined in `project.godot`:
-  - `ui_pause` - Space key or gamepad button
-  - `any_key` - Multiple inputs for menu progression
-  - `ui_menu_toggle` - Escape key or gamepad button
+## Important File References
 
-## Asset Attribution
-Asset sources documented in `sources.yaml` including:
-- Music from Clement Panchout
-- Sound effects from Freesound
-- Sprites and textures from various itch.io creators
+### Documentation Structure
+- **`docs/MAP.md`** - Complete project architecture and structure
+- **`docs/CODE_OF_CONDUCT.md`** - Coding standards and best practices
+- **This file** - Claude Code specific development guidelines
+
+### Key Scripts to Understand
+- `src/autoloads/GameManager.gd` - Scene transition patterns
+- `src/autoloads/DebugManager.gd` - Debug system integration
+- `scenes/match3/match3.gd` - Match-3 implementation reference
+- `project.godot` - Input actions and autoload definitions
+
+## Development Workflow
+
+### Before Making Changes
+1. Check `docs/MAP.md` for architecture understanding
+2. Review `docs/CODE_OF_CONDUCT.md` for coding standards
+3. Understand existing patterns before implementing new features
+
+### Testing Changes
+- Run project with F5 in Godot Editor
+- Test debug UI with F12 toggle
+- Verify scene transitions work correctly
+- Check mobile compatibility if UI changes made
+
+### Common Implementation Patterns
+- Scene transitions: Use `GameManager.change_to_scene()` methods
+- Debug integration: Connect to `DebugManager` signals
+- Settings: Use `SettingsManager` for persistent configuration
+- Audio: Use `AudioManager` for music and sound effects
+- Localization: Use `LocalizationManager` for language switching

docs/CODE_OF_CONDUCT.md

@@ -0,0 +1,297 @@
+# Code of Conduct - Skelly Project
+
+## Overview
+
+This document establishes coding standards and development practices for the Skelly project. These guidelines are designed to help junior developers contribute effectively while maintaining code quality and project consistency.
+
+## Core Principles
+
+### 1. Code Clarity Over Cleverness
+- Write code that is easy to read and understand
+- Use descriptive variable and function names
+- Prefer explicit code over implicit or "clever" solutions
+- Comment complex logic and business rules
+
+### 2. Consistency First
+- Follow existing code patterns in the project
+- Use the same naming conventions throughout
+- Maintain consistent indentation and formatting
+- Follow Godot's GDScript style guide
+
+### 3. Incremental Development
+- Make small, focused commits
+- Test changes before committing
+- Don't break existing functionality
+- Use the debug system to verify your changes
+
+## GDScript Coding Standards
+
+### Naming Conventions
+```gdscript
+# Variables and functions: snake_case
+var player_health: int = 100
+func calculate_damage() -> int:
+
+# Constants: SCREAMING_SNAKE_CASE
+const MAX_HEALTH := 100
+const TILE_SPACING := 54
+
+# Classes: PascalCase
+class_name PlayerController
+
+# Signals: past_tense
+signal health_changed
+signal game_started
+
+# Private functions: prefix with underscore
+func _ready():
+func _initialize_grid():
+```
+
+### File Organization
+```gdscript
+# 1. extends statement
+extends Node2D
+
+# 2. class_name (if applicable)
+class_name Match3Controller
+
+# 3. Constants
+const GRID_SIZE := Vector2i(8, 8)
+
+# 4. Signals
+signal match_found(tiles: Array)
+
+# 5. Variables
+var grid := []
+@onready var debug_ui = $DebugUI
+
+# 6. Functions (lifecycle first, then custom)
+func _ready():
+func _process(delta):
+func custom_function():
+```
+
+### Documentation Requirements
+```gdscript
+# Required for all public functions
+func set_gem_pool(gem_indices: Array) -> void:
+    """Set specific gem types as the active pool"""
+    _update_all_tiles_gem_pool(gem_indices)
+    print("Set gem pool to: ", gem_indices)
+
+# Document complex algorithms
+func _get_match_line(start: Vector2i, dir: Vector2i) -> Array:
+    """Find all matching tiles in a line from start position in given direction"""
+    var line = [grid[start.y][start.x]]
+    var type = grid[start.y][start.x].tile_type
+    # Implementation...
+```
+
+## Project-Specific Guidelines
+
+### Scene Management
+- All scene transitions MUST go through `GameManager`
+- Never use `get_tree().change_scene_to_file()` directly
+- Define scene paths as constants in GameManager
+
+```gdscript
+# ✅ Correct
+GameManager.start_match3_game()
+
+# ❌ Wrong
+get_tree().change_scene_to_file("res://scenes/match3/match3.tscn")
+```
+
+### Autoload Usage
+- Use autoloads for global state only
+- Don't access autoloads from deeply nested components
+- Pass data through signals or direct references when possible
+
+```gdscript
+# ✅ Correct - using signals
+signal settings_changed
+SettingsManager.volume_changed.connect(_on_volume_changed)
+
+# ✅ Also correct - direct access for global state
+var current_language = SettingsManager.get_setting("language")
+
+# ❌ Wrong - tight coupling
+func some_deep_function():
+    SettingsManager.set_setting("volume", 0.5)  # Too deep in call stack
+```
+
+### Debug System Integration
+- Always connect to DebugManager signals for debug UI
+- Use debug prints with clear prefixes
+- Remove debug prints before committing (unless permanently useful)
+
+```gdscript
+# ✅ Correct debug integration
+func _connect_to_global_debug() -> void:
+    DebugManager.debug_ui_toggled.connect(_on_debug_ui_toggled)
+    debug_ui.visible = DebugManager.is_debug_ui_visible()
+
+# ✅ Good debug prints
+print("Match3: Debug UI toggled to: ", visible)
+print("TileSystem: Initialized ", tiles.size(), " tiles")
+
+# ❌ Bad debug prints
+print("test")  # Not descriptive
+print(some_variable)  # No context
+```
+
+### Error Handling
+- Always check if resources loaded successfully
+- Use `push_error()` for critical failures
+- Provide fallback behavior when possible
+
+```gdscript
+# ✅ Correct error handling
+func load_scene(path: String) -> void:
+    var packed_scene := load(path)
+    if not packed_scene or not packed_scene is PackedScene:
+        push_error("Failed to load scene at: %s" % path)
+        return
+    get_tree().change_scene_to_packed(packed_scene)
+```
+
+## Git Workflow
+
+### Commit Guidelines
+- Use clear, descriptive commit messages
+- Start with a verb in imperative mood
+- Keep first line under 50 characters
+- Add body if needed for complex changes
+
+```bash
+# ✅ Good commit messages
+Add gem pool management to match-3 system
+Fix debug UI visibility toggle issue
+Update documentation for new debug system
+
+# ❌ Bad commit messages
+fix bug
+update
+wip
+```
+
+### Branch Management
+- Create feature branches for new functionality
+- Use descriptive branch names: `feature/debug-ui`, `fix/tile-positioning`
+- Keep branches focused on single features
+- Delete branches after merging
+
+### Before Committing
+1. Test your changes in the Godot editor
+2. Check that existing functionality still works
+3. Use the debug system to verify your implementation
+4. Run the project and navigate through affected areas
+5. Remove temporary debug code
+
+## Code Review Guidelines
+
+### For Reviewers
+- Focus on code clarity and maintainability
+- Check for adherence to project patterns
+- Verify that autoloads are used appropriately
+- Ensure debug integration is properly implemented
+- Test the changes yourself
+
+### For Contributors
+- Explain complex logic in commit messages or comments
+- Provide context for why changes were made
+- Test edge cases and error conditions
+- Ask questions if project patterns are unclear
+
+## Testing Approach
+
+### Manual Testing Requirements
+- Test in Godot editor with F5 run
+- Verify debug UI works with F12 toggle
+- Check scene transitions work correctly
+- Test on different screen sizes (mobile target)
+- Verify audio and settings integration
+
+### Debug System Testing
+- Ensure debug panels appear/disappear correctly
+- Test all debug buttons and controls
+- Verify debug state persists across scene changes
+- Check that debug code doesn't affect release builds
+
+## Common Mistakes to Avoid
+
+### Architecture Violations
+```gdscript
+# ❌ Don't bypass GameManager
+get_tree().change_scene_to_file("some_scene.tscn")
+
+# ❌ Don't hardcode paths
+var tile = load("res://scenes/match3/tile.tscn")
+
+# ❌ Don't ignore null checks
+var node = get_node("SomeNode")
+node.do_something()  # Could crash if node doesn't exist
+
+# ❌ Don't create global state in random scripts
+# Use autoloads instead
+```
+
+### Performance Issues
+```gdscript
+# ❌ Don't search nodes repeatedly
+func _process(delta):
+    var ui = get_node("UI")  # Expensive every frame
+
+# ✅ Cache node references
+@onready var ui = $UI
+func _process(delta):
+    ui.update_display()  # Much better
+```
+
+### Debug System Misuse
+```gdscript
+# ❌ Don't create separate debug systems
+var my_debug_enabled = false
+
+# ✅ Use the global debug system
+if DebugManager.is_debug_enabled():
+    show_debug_info()
+```
+
+## Learning Resources
+
+### Godot-Specific
+- [GDScript Style Guide](https://docs.godotengine.org/en/stable/tutorials/scripting/gdscript/gdscript_styleguide.html)
+- [Godot Best Practices](https://docs.godotengine.org/en/stable/tutorials/best_practices/index.html)
+- Project documentation in `docs/map.md`
+
+### General Programming
+- Clean Code principles
+- SOLID principles (adapted for game development)
+- Git best practices
+
+## Getting Help
+
+### When Stuck
+1. Check existing code for similar patterns
+2. Review project documentation (`docs/`)
+3. Use the debug system to understand current state
+4. Ask specific questions about project architecture
+5. Test your understanding with small experiments
+
+### Code Review Process
+- Submit pull requests early and often
+- Ask for feedback on approach before implementing large features
+- Be open to suggestions and alternative approaches
+- Learn from review feedback for future contributions
+
+## Summary
+
+This code of conduct emphasizes:
+- **Clarity**: Write code that others can understand
+- **Consistency**: Follow established patterns
+- **Integration**: Use the project's systems properly
+- **Learning**: Continuously improve your skills
+
+Remember: It's better to ask questions and write clear, simple code than to guess and create complex, hard-to-maintain solutions. The goal is to contribute effectively to a codebase that will grow and evolve over time.

docs/MAP.md

@@ -0,0 +1,209 @@
+# Skelly - Project Structure Map
+
+## Overview
+Skelly is a Godot 4.4 game project featuring a match-3 puzzle game with skeleton character themes. The project follows a modular architecture with clear separation between scenes, autoloads, assets, and data.
+
+## Project Root Structure
+
+```
+skelly/
+├── .claude/                    # Claude Code configuration
+├── .godot/                     # Godot engine generated files (ignored)
+├── assets/                     # Game assets (sprites, audio, textures)
+├── data/                       # Game data and configuration files
+├── docs/                       # Documentation
+├── localization/               # Internationalization files
+├── scenes/                     # Godot scenes (.tscn) and scripts (.gd)
+├── src/                        # Source code organization
+├── project.godot              # Main Godot project configuration
+└── icon.svg                   # Project icon
+```
+
+## Core Architecture
+
+### Autoloads (Global Singletons)
+Located in `src/autoloads/`, these scripts are automatically loaded when the game starts:
+
+1. **SettingsManager** (`src/autoloads/SettingsManager.gd`)
+   - Manages game settings and user preferences
+   - Handles configuration file I/O
+   - Provides language selection functionality
+   - Dependencies: `localization/languages.json`
+
+2. **AudioManager** (`src/autoloads/AudioManager.gd`)
+   - Controls music and sound effects
+   - Manages audio bus configuration
+   - Uses: `data/default_bus_layout.tres`
+
+3. **GameManager** (`src/autoloads/GameManager.gd`)
+   - Central game state management
+   - Scene transitions between main/game/match3
+   - Navigation flow control
+   - References: main.tscn, game.tscn, match3.tscn
+
+4. **LocalizationManager** (`src/autoloads/LocalizationManager.gd`)
+   - Language switching functionality
+   - Works with Godot's built-in internationalization system
+   - Uses translation files in `localization/`
+
+5. **DebugManager** (`src/autoloads/DebugManager.gd`)
+   - Global debug state management
+   - Debug UI visibility control
+   - F12 toggle functionality
+   - Signal-based debug system
+
+## Scene Hierarchy & Flow
+
+### Main Scenes
+```
+main.tscn (Entry Point)
+├── PressAnyKeyScreen.tscn
+├── MainMenu.tscn
+└── SettingsMenu.tscn
+```
+
+### Game Flow
+1. **Main Scene** (`scenes/main/main.tscn` + `Main.gd`)
+   - Application entry point
+   - Manages "Press Any Key" screen
+   - Transitions to main menu
+   - Dynamic menu loading system
+
+2. **Press Any Key Screen** (`scenes/main/PressAnyKeyScreen.tscn` + `PressAnyKeyScreen.gd`)
+   - Initial splash screen
+   - Input detection for any key/button
+   - Signals to main scene for transition
+
+3. **Main Menu** (`scenes/ui/MainMenu.tscn` + `MainMenu.gd`)
+   - Primary navigation hub
+   - Start game, settings, quit options
+   - Connected to GameManager for scene transitions
+
+4. **Settings Menu** (`scenes/ui/SettingsMenu.tscn` + `SettingsMenu.gd`)
+   - User preferences interface
+   - Language selection
+   - Audio volume controls
+   - Connected to SettingsManager and AudioManager
+
+5. **Game Scene** (`scenes/game/game.tscn` + `game.gd`)
+   - Main gameplay container
+   - Loads match-3 instance
+   - Back button for navigation
+   - Bridge between UI and game logic
+
+6. **Match-3 Game** (`scenes/match3/match3.tscn` + `match3.gd`)
+   - Core puzzle game implementation
+   - Grid-based tile system
+   - Debug UI integration
+   - Gem management system
+
+### UI Components
+```
+scenes/ui/
+├── DebugButton.tscn + DebugButton.gd
+├── MainMenu.tscn + MainMenu.gd
+└── SettingsMenu.tscn + SettingsMenu.gd
+```
+
+## Match-3 Game System
+
+### Core Components
+1. **Match3 Controller** (`scenes/match3/match3.gd`)
+   - Grid management (8x8 default)
+   - Match detection algorithms
+   - Tile dropping and refilling
+   - Gem pool management (3-8 gem types)
+   - Debug UI integration
+
+2. **Tile System** (`scenes/match3/tile.gd` + `Tile.tscn`)
+   - Individual tile behavior
+   - Gem type management
+   - Visual representation
+   - Group membership for coordination
+
+### Debug System
+- Global debug state via DebugManager
+- Match-3 specific debug UI panel
+- Gem count controls (+/- buttons)
+- Difficulty presets (Easy: 3 gems, Normal: 5 gems, Hard: 8 gems)
+- Reroll functionality
+- F12 toggle support
+
+## Asset Organization
+
+### Audio (`assets/audio/`)
+```
+audio/
+├── music/          # Background music files
+└── sfx/           # Sound effects
+```
+
+### Visual Assets (`assets/`)
+```
+assets/
+├── sprites/
+│   ├── characters/skeleton/    # Character artwork
+│   ├── gems/                   # Match-3 gem sprites
+│   └── ui/                     # User interface elements
+├── textures/
+│   └── backgrounds/            # Background images
+└── fonts/                      # Custom fonts
+```
+
+## Data & Configuration
+
+### Game Data (`data/`)
+- `default_bus_layout.tres` - Audio bus configuration for Godot
+
+### Localization (`localization/`)
+- `languages.json` - Available language definitions
+- `MainStrings.en.translation` - English translations
+- `MainStrings.ru.translation` - Russian translations
+
+### Project Configuration
+- `project.godot` - Main Godot project settings
+  - Autoload definitions
+  - Input map configurations
+  - Rendering settings
+  - Audio bus references
+
+## Key Dependencies & Connections
+
+### Signal Connections
+```
+PressAnyKeyScreen --[any_key_pressed]--> Main
+MainMenu --[open_settings]--> Main
+SettingsMenu --[back_to_main_menu]--> Main
+DebugManager --[debug_toggled, debug_ui_toggled]--> Match3
+```
+
+### Scene References
+```
+GameManager --> main.tscn, game.tscn, match3.tscn
+Main --> MainMenu.tscn, SettingsMenu.tscn
+Game --> match3.tscn (instantiated)
+```
+
+### Asset Dependencies
+```
+AudioManager --> assets/audio/music/
+SettingsManager --> localization/languages.json
+AudioManager --> data/default_bus_layout.tres
+```
+
+## Development Notes
+
+### Current Implementation Status
+- Match-3 system with 8x8 grid and configurable gem pools
+- Debug UI system with F12 toggle functionality
+- Scene transition system via GameManager
+- Internationalization support for English/Russian
+
+### Architecture Patterns
+1. **Autoload Pattern** - Global managers as singletons
+2. **Signal-Based Communication** - Loose coupling between components
+3. **Scene Composition** - Modular scene loading and management
+4. **Data-Driven Configuration** - JSON for settings and translations
+5. **Component Architecture** - Reusable UI and game components
+
+This structure provides a clean separation of concerns, making the codebase maintainable and extensible for future features.

project.godot

@@ -25,6 +25,7 @@ SettingsManager="*res://src/autoloads/SettingsManager.gd"
 AudioManager="*res://src/autoloads/AudioManager.gd"
 GameManager="*res://src/autoloads/GameManager.gd"
 LocalizationManager="*res://src/autoloads/LocalizationManager.gd"
+DebugManager="*res://src/autoloads/DebugManager.gd"
 
 [input]
 
@@ -55,4 +56,5 @@ locale/translations=PackedStringArray("res://localization/MainStrings.en.transla
 [rendering]
 
 textures/canvas_textures/default_texture_filter=0
-renderer/rendering_method="mobile"
+renderer/rendering_method="gl_compatibility"
+renderer/rendering_method.mobile="gl_compatibility"

scenes/game/game.gd

@@ -1,27 +1,17 @@
 extends Node
 
 @onready var back_button: Button = $BackButtonContainer/BackButton
-const MATCH3_SCENE_PATH := "res://scenes/match3/match3.tscn"
-var match3_instance: Node
+# Fixed: Use static Match3 instance from scene instead of dynamic loading
+@onready var match3_instance: Node = $Match3
 
 func _ready() -> void:
 	if not back_button.pressed.is_connected(_on_back_button_pressed):
 		back_button.pressed.connect(_on_back_button_pressed)
-	_load_match3_scene()
+	# Fixed: No need to load match3 scene - it's already in the scene tree
 
 
 func _on_back_button_pressed() -> void:
 	AudioManager.play_ui_click()
 	GameManager.save_game()
-	if match3_instance and is_instance_valid(match3_instance):
-		match3_instance.queue_free()
+	# Fixed: Don't free the static instance, just exit
 	GameManager.exit_to_main_menu()
-
-func _load_match3_scene() -> void:
-	var match3_scene := load(MATCH3_SCENE_PATH)
-	if not match3_scene or not match3_scene is PackedScene:
-		push_error("Failed to load Match3 scene at: %s" % MATCH3_SCENE_PATH)
-		return
-
-	match3_instance = match3_scene.instantiate()
-	add_child(match3_instance)

scenes/game/game.tscn

@@ -1,7 +1,9 @@
-[gd_scene load_steps=3 format=3 uid="uid://dmwkyeq2l7u04"]
+[gd_scene load_steps=5 format=3 uid="uid://dmwkyeq2l7u04"]
 
-[ext_resource type="Script" uid="uid://bvtr6yhlyuv4v" path="res://scenes/game/game.gd" id="1_uwrxv"]
+[ext_resource type="Script" uid="uid://b16jnk7w22mb" path="res://scenes/game/game.gd" id="1_uwrxv"]
 [ext_resource type="PackedScene" uid="uid://b4kv7g7kllwgb" path="res://scenes/match3/match3.tscn" id="2_yqjtg"]
+[ext_resource type="PackedScene" path="res://scenes/ui/DebugToggle.tscn" id="3_debug"]
+[ext_resource type="PackedScene" uid="uid://fax5m4ywp1r3" path="res://scenes/ui/DebugMenu.tscn" id="4_debug_menu"]
 
 [node name="Game" type="Node"]
 script = ExtResource("1_uwrxv")
@@ -19,3 +21,7 @@ offset_bottom = 31.0
 text = "back"
 
 [node name="Match3" parent="." instance=ExtResource("2_yqjtg")]
+
+[node name="DebugToggle" parent="." instance=ExtResource("3_debug")]
+
+[node name="DebugMenu" parent="." instance=ExtResource("4_debug_menu")]

scenes/main/PressAnyKeyScreen.tscn

@@ -1,6 +1,6 @@
 [gd_scene load_steps=15 format=3 uid="uid://gbe1jarrwqsi"]
 
-[ext_resource type="Script" uid="uid://buak21ajgvevl" path="res://scenes/main/PressAnyKeyScreen.gd" id="1_0a4p2"]
+[ext_resource type="Script" uid="uid://cxw2fjj5onja3" path="res://scenes/main/PressAnyKeyScreen.gd" id="1_0a4p2"]
 [ext_resource type="Texture2D" uid="uid://bcr4bokw87m5n" path="res://assets/sprites/characters/skeleton/Skeleton Idle.png" id="2_rjjcb"]
 
 [sub_resource type="AtlasTexture" id="AtlasTexture_l6pue"]

scenes/main/main.tscn

@@ -1,8 +1,9 @@
-[gd_scene load_steps=4 format=3 uid="uid://ci2gk11211n0d"]
+[gd_scene load_steps=5 format=3 uid="uid://ci2gk11211n0d"]
 
-[ext_resource type="Script" uid="uid://cwlop1ettlqhg" path="res://scenes/main/Main.gd" id="1_0wfyh"]
+[ext_resource type="Script" uid="uid://b0uwk2jlm6g08" path="res://scenes/main/Main.gd" id="1_0wfyh"]
 [ext_resource type="PackedScene" uid="uid://gbe1jarrwqsi" path="res://scenes/main/PressAnyKeyScreen.tscn" id="1_o5qli"]
 [ext_resource type="Texture2D" uid="uid://c8y6tlvcgh2gn" path="res://assets/textures/backgrounds/beanstalk-dark.webp" id="2_sugp2"]
+[ext_resource type="PackedScene" path="res://scenes/ui/DebugToggle.tscn" id="4_v7g8d"]
 
 [node name="main" type="Control"]
 layout_mode = 3
@@ -25,3 +26,6 @@ stretch_mode = 1
 
 [node name="PressAnyKeyScreen" parent="." instance=ExtResource("1_o5qli")]
 layout_mode = 1
+
+[node name="DebugToggle" parent="." instance=ExtResource("4_v7g8d")]
+layout_mode = 1

scenes/match3/match3.gd

@@ -1,26 +1,71 @@
 extends Node2D
 
-const GRID_SIZE := Vector2i(8, 8)
-const TILE_TYPES := 5
+var GRID_SIZE := Vector2i(8, 8)
+var TILE_TYPES := 5
 const TILE_SCENE := preload("res://scenes/match3/tile.tscn")
 
 var grid := []
+var tile_size: float = 48.0
+var grid_offset: Vector2
 
 func _ready():
+	# Set up initial gem pool
+	var gem_indices = []
+	for i in range(TILE_TYPES):
+		gem_indices.append(i)
+
+	const TileScript = preload("res://scenes/match3/tile.gd")
+	TileScript.set_active_gem_pool(gem_indices)
+
+	_calculate_grid_layout()
 	_initialize_grid()
 
+func _calculate_grid_layout():
+	var viewport_size = get_viewport().get_visible_rect().size
+	var available_width = viewport_size.x * 0.8  # Use 80% of screen width
+	var available_height = viewport_size.y * 0.7  # Use 70% of screen height
+
+	# Calculate tile size based on available space
+	var max_tile_width = available_width / GRID_SIZE.x
+	var max_tile_height = available_height / GRID_SIZE.y
+	tile_size = min(max_tile_width, max_tile_height)
+
+	# Align grid to left side with some margin
+	var total_grid_height = tile_size * GRID_SIZE.y
+	grid_offset = Vector2(
+		50,  # Left margin
+		(viewport_size.y - total_grid_height) / 2 + 50  # Vertically centered with top margin
+	)
+
 func _initialize_grid():
+	# Update gem pool BEFORE creating any tiles
+	var gem_indices = []
+	for i in range(TILE_TYPES):
+		gem_indices.append(i)
+
+	const TileScript = preload("res://scenes/match3/tile.gd")
+	TileScript.set_active_gem_pool(gem_indices)
+
 	for y in range(GRID_SIZE.y):
 		grid.append([])
 		for x in range(GRID_SIZE.x):
 			var tile = TILE_SCENE.instantiate()
-			tile.position = Vector2(x, y) * 64  # Adjust to your tile size
+			tile.position = grid_offset + Vector2(x, y) * tile_size
 			tile.grid_position = Vector2i(x, y)
-			tile.tile_type = randi() % TILE_TYPES
 			add_child(tile)
+			# Set tile type after adding to scene tree so sprite reference is available
+			var new_type = randi() % TILE_TYPES
+			tile.tile_type = new_type
+			print("Debug: Created tile at (", x, ",", y, ") with type ", new_type)
 			grid[y].append(tile)
 
 func _has_match_at(pos: Vector2i) -> bool:
+	# Fixed: Add bounds and null checks
+	if pos.x < 0 or pos.y < 0 or pos.x >= GRID_SIZE.x or pos.y >= GRID_SIZE.y:
+		return false
+	if not grid[pos.y][pos.x]:
+		return false
+
 	var matches_horizontal = _get_match_line(pos, Vector2i(1, 0))
 	if matches_horizontal.size() >= 3:
 		return true
@@ -28,15 +73,25 @@ func _has_match_at(pos: Vector2i) -> bool:
 	var matches_vertical = _get_match_line(pos, Vector2i(0, 1))
 	return matches_vertical.size() >= 3
 
+# Fixed: Add missing function to check for any matches on the board
+func _check_for_matches() -> bool:
+	for y in range(GRID_SIZE.y):
+		for x in range(GRID_SIZE.x):
+			if _has_match_at(Vector2i(x, y)):
+				return true
+	return false
+
 func _get_match_line(start: Vector2i, dir: Vector2i) -> Array:
 	var line = [grid[start.y][start.x]]
 	var type = grid[start.y][start.x].tile_type
 
+	# Fixed: Check in both directions separately to avoid infinite loops
 	for offset in [1, -1]:
 		var current = start + dir * offset
 		while current.x >= 0 and current.y >= 0 and current.x < GRID_SIZE.x and current.y < GRID_SIZE.y:
 			var neighbor = grid[current.y][current.x]
-			if neighbor.tile_type != type:
+			# Fixed: Add null check to prevent crashes
+			if not neighbor or neighbor.tile_type != type:
 				break
 			line.append(neighbor)
 			current += dir * offset
@@ -48,6 +103,9 @@ func _clear_matches():
 
 	for y in range(GRID_SIZE.y):
 		for x in range(GRID_SIZE.x):
+			# Fixed: Add null check before processing
+			if not grid[y][x]:
+				continue
 			var pos = Vector2i(x, y)
 			var horiz = _get_match_line(pos, Vector2i(1, 0))
 			if horiz.size() >= 3:
@@ -62,6 +120,10 @@ func _clear_matches():
 		unique_dict[tile] = true
 	to_clear = unique_dict.keys()
 
+	# Fixed: Only proceed if there are matches to clear
+	if to_clear.size() == 0:
+		return
+
 	for tile in to_clear:
 		grid[tile.grid_position.y][tile.grid_position.x] = null
 		tile.queue_free()
@@ -75,15 +137,17 @@ func _drop_tiles():
 	while moved:
 		moved = false
 		for x in range(GRID_SIZE.x):
-			for y in range(GRID_SIZE.y - 2, -1, -1):
+			# Fixed: Start from GRID_SIZE.y - 1 to avoid out of bounds
+			for y in range(GRID_SIZE.y - 1, -1, -1):
 				var tile = grid[y][x]
-				if tile and not grid[y + 1][x]:
+				# Fixed: Check bounds before accessing y + 1
+				if tile and y + 1 < GRID_SIZE.y and not grid[y + 1][x]:
 					grid[y + 1][x] = tile
 					grid[y][x] = null
 					tile.grid_position = Vector2i(x, y + 1)
 					# You can animate position here using Tween for smooth drop:
-					# tween.interpolate_property(tile, "position", tile.position, Vector2(x, y + 1) * 64, 0.2)
-					tile.position = Vector2(x, y + 1) * 64
+					# tween.interpolate_property(tile, "position", tile.position, grid_offset + Vector2(x, y + 1) * tile_size, 0.2)
+					tile.position = grid_offset + Vector2(x, y + 1) * tile_size
 					moved = true
 
 func _fill_empty_cells():
@@ -93,10 +157,63 @@ func _fill_empty_cells():
 				var tile = TILE_SCENE.instantiate()
 				tile.grid_position = Vector2i(x, y)
 				tile.tile_type = randi() % TILE_TYPES
-				tile.position = Vector2(x, y) * 64
+				tile.position = grid_offset + Vector2(x, y) * tile_size
 				grid[y][x] = tile
 				add_child(tile)
 
-	# Recheck matches
+	# Fixed: Add recursion protection to prevent stack overflow
 	await get_tree().create_timer(0.1).timeout
-	_clear_matches()
+	var max_iterations = 10
+	var iteration = 0
+	while _check_for_matches() and iteration < max_iterations:
+		_clear_matches()
+		await get_tree().create_timer(0.1).timeout
+		iteration += 1
+
+func regenerate_grid():
+	# Use time-based seed to ensure different patterns each time
+	var new_seed = Time.get_ticks_msec()
+	seed(new_seed)
+	print("Debug: Regenerating grid with seed: ", new_seed)
+
+	# Fixed: Clear ALL tile children, not just ones in grid array
+	# This handles any orphaned tiles that might not be tracked in the grid
+	var children_to_remove = []
+	for child in get_children():
+		if child.has_method("get_script") and child.get_script():
+			var script_path = child.get_script().resource_path
+			if script_path == "res://scenes/match3/tile.gd":
+				children_to_remove.append(child)
+
+	# Remove all found tile children
+	for child in children_to_remove:
+		child.free()
+
+	# Also clear grid array references
+	for y in range(grid.size()):
+		if grid[y] and grid[y] is Array:
+			for x in range(grid[y].size()):
+				# Set to null since we already freed the nodes above
+				grid[y][x] = null
+
+	# Clear the grid array
+	grid.clear()
+
+	# No need to wait for nodes to be freed since we used free()
+
+	# Fixed: Recalculate grid layout before regenerating tiles
+	_calculate_grid_layout()
+
+	# Regenerate the grid (gem pool is updated in _initialize_grid)
+	_initialize_grid()
+
+func set_tile_types(new_count: int):
+	TILE_TYPES = new_count
+	# Regenerate grid with new tile types (gem pool is updated in regenerate_grid)
+	await regenerate_grid()
+
+func set_grid_size(new_size: Vector2i):
+	print("Debug: Changing grid size from ", GRID_SIZE, " to ", new_size)
+	GRID_SIZE = new_size
+	# Regenerate grid with new size
+	await regenerate_grid()

scenes/match3/match3.tscn

@@ -1,13 +1,8 @@
-[gd_scene load_steps=3 format=3 uid="uid://b4kv7g7kllwgb"]
+[gd_scene load_steps=2 format=3 uid="uid://b4kv7g7kllwgb"]
 
 [ext_resource type="Script" uid="uid://bvyiwvpepqfdu" path="res://scenes/match3/match3.gd" id="1_mvfdp"]
-[ext_resource type="Texture2D" uid="uid://ccprr0qrj3lgm" path="res://assets/sprites/gems/rg_19.png" id="2_0fhn8"]
 
 [node name="Match3" type="Node2D"]
 script = ExtResource("1_mvfdp")
 
 [node name="GridContainer" type="Node2D" parent="."]
-
-[node name="Sprite2D" type="Sprite2D" parent="."]
-position = Vector2(584, 317)
-texture = ExtResource("2_0fhn8")

scenes/match3/tile.gd

@@ -1,33 +1,116 @@
 extends Node2D
 
-@export var tile_type: int = 0
+@export var tile_type: int = 0 : set = _set_tile_type
 var grid_position: Vector2i
 
 @onready var sprite: Sprite2D = $Sprite2D
 
-# Target size for each tile to fit in the 64x64 grid cells
-const TILE_SIZE = 48  # Slightly smaller than 64 to leave some padding
+# Target size for each tile to fit in the 54x54 grid cells
+const TILE_SIZE = 48  # Slightly smaller than 54 to leave some padding
 
-var tile_textures = [
-	preload("res://assets/sprites/gems/bg_19.png"),
-	preload("res://assets/sprites/gems/dg_19.png"),
-	preload("res://assets/sprites/gems/gg_19.png"),
-	preload("res://assets/sprites/gems/mg_19.png"),
+# All available gem textures
+var all_gem_textures = [
+	preload("res://assets/sprites/gems/bg_19.png"),    # 0 - Blue gem
+	preload("res://assets/sprites/gems/dg_19.png"),    # 1 - Dark gem
+	preload("res://assets/sprites/gems/gg_19.png"),    # 2 - Green gem
+	preload("res://assets/sprites/gems/mg_19.png"),    # 3 - Magenta gem
+	preload("res://assets/sprites/gems/rg_19.png"),    # 4 - Red gem
+	preload("res://assets/sprites/gems/yg_19.png"),    # 5 - Yellow gem
+	preload("res://assets/sprites/gems/pg_19.png"),    # 6 - Purple gem
+	preload("res://assets/sprites/gems/sg_19.png"),    # 7 - Silver gem
 ]
 
+# Static variable to store the current gem pool for all tiles
+static var current_gem_pool = [0, 1, 2, 3, 4]  # Start with first 5 gems
+
+# Currently active gem types (indices into all_gem_textures)
+var active_gem_types = []  # Will be set from current_gem_pool
+
 func _set_tile_type(value: int) -> void:
 	tile_type = value
-	if value >= 0 and value < tile_textures.size():
-		sprite.texture = tile_textures[value]
+	print("Debug: _set_tile_type called with value ", value, ", active_gem_types.size() = ", active_gem_types.size())
+	# Fixed: Add sprite null check to prevent crashes during initialization
+	if not sprite:
+		return
+	if value >= 0 and value < active_gem_types.size():
+		var texture_index = active_gem_types[value]
+		sprite.texture = all_gem_textures[texture_index]
+		print("Debug: Set texture_index ", texture_index, " for tile_type ", value)
 		_scale_sprite_to_fit()
+	else:
+		push_error("Invalid tile type: " + str(value) + ". Available types: 0-" + str(active_gem_types.size() - 1))
 
 func _scale_sprite_to_fit() -> void:
-	if sprite.texture:
+	# Fixed: Add additional null checks
+	if sprite and sprite.texture:
 		var texture_size = sprite.texture.get_size()
 		var max_dimension = max(texture_size.x, texture_size.y)
 		var scale_factor = TILE_SIZE / max_dimension
 		sprite.scale = Vector2(scale_factor, scale_factor)
 
+# Gem pool management functions
+static func set_active_gem_pool(gem_indices: Array) -> void:
+	# Update static gem pool for new tiles
+	current_gem_pool = gem_indices.duplicate()
+
+	# Update all existing tile instances to use new gem pool
+	var scene_tree = Engine.get_main_loop() as SceneTree
+	if scene_tree:
+		var tiles = scene_tree.get_nodes_in_group("tiles")
+		for tile in tiles:
+			if tile.has_method("_update_active_gems"):
+				tile._update_active_gems(gem_indices)
+
+func _update_active_gems(gem_indices: Array) -> void:
+	active_gem_types = gem_indices.duplicate()
+	# Re-validate current tile type
+	if tile_type >= active_gem_types.size():
+		# Generate a new random tile type within valid range
+		tile_type = randi() % active_gem_types.size()
+	_set_tile_type(tile_type)
+
+static func get_active_gem_count() -> int:
+	# Get from any tile instance or default
+	var scene_tree = Engine.get_main_loop() as SceneTree
+	if scene_tree:
+		var tiles = scene_tree.get_nodes_in_group("tiles")
+		if tiles.size() > 0:
+			return tiles[0].active_gem_types.size()
+	return 5  # Default
+
+static func add_gem_to_pool(gem_index: int) -> void:
+	var scene_tree = Engine.get_main_loop() as SceneTree
+	if scene_tree:
+		var tiles = scene_tree.get_nodes_in_group("tiles")
+		for tile in tiles:
+			if tile.has_method("_add_gem_type"):
+				tile._add_gem_type(gem_index)
+
+func _add_gem_type(gem_index: int) -> void:
+	if gem_index >= 0 and gem_index < all_gem_textures.size():
+		if not active_gem_types.has(gem_index):
+			active_gem_types.append(gem_index)
+
+static func remove_gem_from_pool(gem_index: int) -> void:
+	var scene_tree = Engine.get_main_loop() as SceneTree
+	if scene_tree:
+		var tiles = scene_tree.get_nodes_in_group("tiles")
+		for tile in tiles:
+			if tile.has_method("_remove_gem_type"):
+				tile._remove_gem_type(gem_index)
+
+func _remove_gem_type(gem_index: int) -> void:
+	var type_index = active_gem_types.find(gem_index)
+	if type_index != -1 and active_gem_types.size() > 2:  # Keep at least 2 gem types
+		active_gem_types.erase(gem_index)
+		# Update tiles that were using removed type
+		if tile_type >= active_gem_types.size():
+			tile_type = 0
+			_set_tile_type(tile_type)
+
 # Called when the node enters the scene tree for the first time.
 func _ready() -> void:
+	add_to_group("tiles")  # Add to group for gem pool management
+	# Initialize with current static gem pool
+	active_gem_types = current_gem_pool.duplicate()
 	_set_tile_type(tile_type)

scenes/ui/DebugButton.tscn

@@ -0,0 +1,25 @@
+[gd_scene load_steps=2 format=3 uid="uid://dmjfgs6r4yfwl"]
+
+[ext_resource type="Script" uid="uid://bt6a8gpw1e31c" path="res://scenes/ui/DebugButton.gd" id="1_debug_script"]
+
+[node name="DebugButton" type="Control"]
+layout_mode = 3
+anchors_preset = 3
+anchor_left = 1.0
+anchor_top = 1.0
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_left = -80.0
+offset_top = -40.0
+grow_horizontal = 0
+grow_vertical = 0
+script = ExtResource("1_debug_script")
+
+[node name="Button" type="Button" parent="."]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+text = "DEBUG"

scenes/ui/DebugMenu.gd

@@ -0,0 +1,203 @@
+extends Control
+
+@onready var regenerate_button: Button = $VBoxContainer/RegenerateButton
+@onready var gem_types_spinbox: SpinBox = $VBoxContainer/GemTypesContainer/GemTypesSpinBox
+@onready var gem_types_label: Label = $VBoxContainer/GemTypesContainer/GemTypesLabel
+@onready var grid_width_spinbox: SpinBox = $VBoxContainer/GridSizeContainer/GridWidthContainer/GridWidthSpinBox
+@onready var grid_height_spinbox: SpinBox = $VBoxContainer/GridSizeContainer/GridHeightContainer/GridHeightSpinBox
+@onready var grid_width_label: Label = $VBoxContainer/GridSizeContainer/GridWidthContainer/GridWidthLabel
+@onready var grid_height_label: Label = $VBoxContainer/GridSizeContainer/GridHeightContainer/GridHeightLabel
+
+var match3_scene: Node2D
+var search_timer: Timer
+
+# Fixed: Add cleanup function
+func _exit_tree():
+	if search_timer:
+		search_timer.queue_free()
+
+func _ready():
+	visible = false
+	DebugManager.debug_toggled.connect(_on_debug_toggled)
+	regenerate_button.pressed.connect(_on_regenerate_pressed)
+	gem_types_spinbox.value_changed.connect(_on_gem_types_changed)
+	grid_width_spinbox.value_changed.connect(_on_grid_width_changed)
+	grid_height_spinbox.value_changed.connect(_on_grid_height_changed)
+
+	# Initialize gem types spinbox
+	gem_types_spinbox.min_value = 3
+	gem_types_spinbox.max_value = 8
+	gem_types_spinbox.step = 1
+	gem_types_spinbox.value = 5  # Default value
+
+	# Initialize grid size spinboxes
+	grid_width_spinbox.min_value = 4
+	grid_width_spinbox.max_value = 12
+	grid_width_spinbox.step = 1
+	grid_width_spinbox.value = 8  # Default value
+
+	grid_height_spinbox.min_value = 4
+	grid_height_spinbox.max_value = 12
+	grid_height_spinbox.step = 1
+	grid_height_spinbox.value = 8  # Default value
+
+	# Fixed: Create timer for periodic match3 scene search
+	search_timer = Timer.new()
+	search_timer.wait_time = 0.1
+	search_timer.timeout.connect(_find_match3_scene)
+	add_child(search_timer)
+
+	# Start searching immediately and continue until found
+	_find_match3_scene()
+
+func _find_match3_scene():
+	# Fixed: Search more thoroughly for match3 scene
+	if match3_scene:
+		# Already found, stop searching
+		if search_timer and search_timer.timeout.is_connected(_find_match3_scene):
+			search_timer.stop()
+		return
+
+	# Search in current scene tree
+	var current_scene = get_tree().current_scene
+	if current_scene:
+		# Try to find match3 by class name first
+		match3_scene = _find_node_by_script(current_scene, "res://scenes/match3/match3.gd")
+
+		# Fallback: search by common node names
+		if not match3_scene:
+			for possible_name in ["Match3", "match3", "Match3Game"]:
+				match3_scene = current_scene.find_child(possible_name, true, false)
+				if match3_scene:
+					break
+
+	if match3_scene:
+		print("Debug: Found match3 scene: ", match3_scene.name)
+		# Update UI with current values
+		if match3_scene.has_method("get") and "TILE_TYPES" in match3_scene:
+			gem_types_spinbox.value = match3_scene.TILE_TYPES
+			gem_types_label.text = "Gem Types: " + str(match3_scene.TILE_TYPES)
+
+		# Update grid size values
+		if "GRID_SIZE" in match3_scene:
+			var grid_size = match3_scene.GRID_SIZE
+			grid_width_spinbox.value = grid_size.x
+			grid_height_spinbox.value = grid_size.y
+			grid_width_label.text = "Width: " + str(grid_size.x)
+			grid_height_label.text = "Height: " + str(grid_size.y)
+
+		# Stop the search timer
+		if search_timer and search_timer.timeout.is_connected(_find_match3_scene):
+			search_timer.stop()
+	else:
+		# Continue searching if not found
+		if search_timer and not search_timer.timeout.is_connected(_find_match3_scene):
+			search_timer.timeout.connect(_find_match3_scene)
+			search_timer.start()
+
+func _find_node_by_script(node: Node, script_path: String) -> Node:
+	# Helper function to find node by its script path
+	if node.get_script():
+		var node_script = node.get_script()
+		if node_script.resource_path == script_path:
+			return node
+
+	for child in node.get_children():
+		var result = _find_node_by_script(child, script_path)
+		if result:
+			return result
+
+	return null
+
+func _on_debug_toggled(enabled: bool):
+	visible = enabled
+	if enabled:
+		# Always refresh match3 scene reference when debug menu opens
+		if not match3_scene:
+			_find_match3_scene()
+		# Update display values
+		if match3_scene and match3_scene.has_method("get") and "TILE_TYPES" in match3_scene:
+			gem_types_spinbox.value = match3_scene.TILE_TYPES
+			gem_types_label.text = "Gem Types: " + str(match3_scene.TILE_TYPES)
+
+		# Update grid size display values
+		if match3_scene and "GRID_SIZE" in match3_scene:
+			var grid_size = match3_scene.GRID_SIZE
+			grid_width_spinbox.value = grid_size.x
+			grid_height_spinbox.value = grid_size.y
+			grid_width_label.text = "Width: " + str(grid_size.x)
+			grid_height_label.text = "Height: " + str(grid_size.y)
+
+func _on_regenerate_pressed():
+	if not match3_scene:
+		_find_match3_scene()
+
+	if not match3_scene:
+		print("Error: Could not find match3 scene for regeneration")
+		return
+
+	if match3_scene.has_method("regenerate_grid"):
+		print("Debug: Calling regenerate_grid()")
+		await match3_scene.regenerate_grid()
+	else:
+		print("Error: match3_scene does not have regenerate_grid method")
+
+func _on_gem_types_changed(value: float):
+	if not match3_scene:
+		_find_match3_scene()
+
+	if not match3_scene:
+		print("Error: Could not find match3 scene for gem types change")
+		return
+
+	var new_value = int(value)
+	if match3_scene.has_method("set_tile_types"):
+		print("Debug: Setting tile types to ", new_value)
+		await match3_scene.set_tile_types(new_value)
+		gem_types_label.text = "Gem Types: " + str(new_value)
+	else:
+		print("Error: match3_scene does not have set_tile_types method")
+		# Fallback: try to set TILE_TYPES directly
+		if "TILE_TYPES" in match3_scene:
+			match3_scene.TILE_TYPES = new_value
+			gem_types_label.text = "Gem Types: " + str(new_value)
+
+func _on_grid_width_changed(value: float):
+	if not match3_scene:
+		_find_match3_scene()
+
+	if not match3_scene:
+		print("Error: Could not find match3 scene for grid width change")
+		return
+
+	var new_width = int(value)
+	grid_width_label.text = "Width: " + str(new_width)
+
+	# Get current height
+	var current_height = int(grid_height_spinbox.value)
+
+	if match3_scene.has_method("set_grid_size"):
+		print("Debug: Setting grid size to ", new_width, "x", current_height)
+		await match3_scene.set_grid_size(Vector2i(new_width, current_height))
+	else:
+		print("Error: match3_scene does not have set_grid_size method")
+
+func _on_grid_height_changed(value: float):
+	if not match3_scene:
+		_find_match3_scene()
+
+	if not match3_scene:
+		print("Error: Could not find match3 scene for grid height change")
+		return
+
+	var new_height = int(value)
+	grid_height_label.text = "Height: " + str(new_height)
+
+	# Get current width
+	var current_width = int(grid_width_spinbox.value)
+
+	if match3_scene.has_method("set_grid_size"):
+		print("Debug: Setting grid size to ", current_width, "x", new_height)
+		await match3_scene.set_grid_size(Vector2i(current_width, new_height))
+	else:
+		print("Error: match3_scene does not have set_grid_size method")

scenes/ui/DebugMenu.tscn

@@ -0,0 +1,83 @@
+[gd_scene load_steps=2 format=3 uid="uid://fax5m4ywp1r3"]
+
+[ext_resource type="Script" uid="uid://b4ppfg1tb0al0" path="res://scenes/ui/DebugMenu.gd" id="1_debug_menu"]
+
+[node name="DebugMenu" type="Control"]
+layout_mode = 3
+anchors_preset = 1
+anchor_left = 1.0
+anchor_right = 1.0
+offset_left = -201.0
+offset_top = 59.0
+offset_right = -11.0
+offset_bottom = 169.0
+grow_horizontal = 0
+script = ExtResource("1_debug_menu")
+
+[node name="VBoxContainer" type="VBoxContainer" parent="."]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_left = 10.0
+offset_top = 10.0
+offset_right = -10.0
+offset_bottom = -10.0
+grow_horizontal = 2
+grow_vertical = 2
+
+[node name="TitleLabel" type="Label" parent="VBoxContainer"]
+layout_mode = 2
+text = "Debug Menu"
+horizontal_alignment = 1
+
+[node name="RegenerateButton" type="Button" parent="VBoxContainer"]
+layout_mode = 2
+text = "Generate New Grid"
+
+[node name="GemTypesContainer" type="HBoxContainer" parent="VBoxContainer"]
+layout_mode = 2
+
+[node name="GemTypesLabel" type="Label" parent="VBoxContainer/GemTypesContainer"]
+layout_mode = 2
+text = "Gem Types: 5"
+
+[node name="GemTypesSpinBox" type="SpinBox" parent="VBoxContainer/GemTypesContainer"]
+layout_mode = 2
+min_value = 3.0
+max_value = 8.0
+value = 5.0
+
+[node name="GridSizeContainer" type="VBoxContainer" parent="VBoxContainer"]
+layout_mode = 2
+
+[node name="GridSizeLabel" type="Label" parent="VBoxContainer/GridSizeContainer"]
+layout_mode = 2
+text = "Grid Size"
+horizontal_alignment = 1
+
+[node name="GridWidthContainer" type="HBoxContainer" parent="VBoxContainer/GridSizeContainer"]
+layout_mode = 2
+
+[node name="GridWidthLabel" type="Label" parent="VBoxContainer/GridSizeContainer/GridWidthContainer"]
+layout_mode = 2
+text = "Width: 8"
+
+[node name="GridWidthSpinBox" type="SpinBox" parent="VBoxContainer/GridSizeContainer/GridWidthContainer"]
+layout_mode = 2
+min_value = 4.0
+max_value = 12.0
+value = 8.0
+
+[node name="GridHeightContainer" type="HBoxContainer" parent="VBoxContainer/GridSizeContainer"]
+layout_mode = 2
+
+[node name="GridHeightLabel" type="Label" parent="VBoxContainer/GridSizeContainer/GridHeightContainer"]
+layout_mode = 2
+text = "Height: 8"
+
+[node name="GridHeightSpinBox" type="SpinBox" parent="VBoxContainer/GridSizeContainer/GridHeightContainer"]
+layout_mode = 2
+min_value = 4.0
+max_value = 12.0
+value = 8.0

scenes/ui/DebugToggle.gd

@@ -0,0 +1,12 @@
+extends Button
+
+func _ready():
+	text = "Debug: OFF"
+	pressed.connect(_on_pressed)
+	DebugManager.debug_toggled.connect(_on_debug_toggled)
+
+func _on_pressed():
+	DebugManager.toggle_debug()
+
+func _on_debug_toggled(enabled: bool):
+	text = "Debug: " + ("ON" if enabled else "OFF")

scenes/ui/DebugToggle.tscn

@@ -0,0 +1,18 @@
+[gd_scene load_steps=2 format=3 uid="uid://df2b4wn8j6cxl"]
+
+[ext_resource type="Script" path="res://scenes/ui/DebugToggle.gd" id="1_gn2ol"]
+
+[node name="DebugToggle" type="Button"]
+anchors_preset = 3
+anchor_left = 1.0
+anchor_top = 1.0
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_left = -110.0
+offset_top = -40.0
+offset_right = -10.0
+offset_bottom = -10.0
+grow_horizontal = 0
+grow_vertical = 0
+text = "Debug: OFF"
+script = ExtResource("1_gn2ol")

scenes/ui/MainMenu.tscn

@@ -1,6 +1,6 @@
 [gd_scene load_steps=2 format=3 uid="uid://m8lf3eh3al5j"]
 
-[ext_resource type="Script" uid="uid://ctu58xq7btp1n" path="res://scenes/ui/MainMenu.gd" id="1_b00nv"]
+[ext_resource type="Script" uid="uid://b2c35v0f6rymd" path="res://scenes/ui/MainMenu.gd" id="1_b00nv"]
 
 [node name="MainMenu" type="Control"]
 layout_mode = 3

scenes/ui/SettingsMenu.tscn

@@ -1,6 +1,6 @@
 [gd_scene load_steps=2 format=3 uid="uid://57obmcwyos2g"]
 
-[ext_resource type="Script" uid="uid://c8mlvlerv4y03" path="res://scenes/ui/SettingsMenu.gd" id="1_oqkcn"]
+[ext_resource type="Script" uid="uid://bv56qwni68qo" path="res://scenes/ui/SettingsMenu.gd" id="1_oqkcn"]
 
 [node name="SettingsMenu" type="Control" groups=["localizable"]]
 layout_mode = 3

src/autoloads/DebugManager.gd

@@ -0,0 +1,35 @@
+extends Node
+
+signal debug_toggled(enabled: bool)
+
+var debug_enabled: bool = false
+var debug_overlay_visible: bool = false
+
+func _ready():
+	print("DebugManager loaded")
+
+func toggle_debug():
+	debug_enabled = !debug_enabled
+	debug_toggled.emit(debug_enabled)
+	print("Debug mode: ", "ON" if debug_enabled else "OFF")
+
+func set_debug_enabled(enabled: bool):
+	if debug_enabled != enabled:
+		debug_enabled = enabled
+		debug_toggled.emit(debug_enabled)
+
+func is_debug_enabled() -> bool:
+	return debug_enabled
+
+func toggle_overlay():
+	debug_overlay_visible = !debug_overlay_visible
+
+func set_overlay_visible(visible: bool):
+	debug_overlay_visible = visible
+
+func is_overlay_visible() -> bool:
+	return debug_overlay_visible
+
+func log_debug(message: String, category: String = "DEBUG"):
+	if debug_enabled:
+		print("[", category, "] ", message)